@misc{1172996,
  author = {Romuald Zalubas},
  title = {New description of thorium spectra:},
  year = {1960},
  month = {1960-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.MONO.17},
  language = {en},
}